Casio ClassWiz CW Tutorial: Defining & Evaluating Functions

Learn how to define, evaluate, and work with functions and composites using ClassWiz scientific calculators. This tutorial demonstrates how to enter functions, evaluate a function for a specific value and explore compositions of functions, helping students develop a stronger understanding of one of the most important topics in algebra and advanced mathematics. The video provides step-by-step guidance on using calculator technology to simplify function-based calculations and verify mathematical results. Designed for GCSE and A-Level Mathematics, this lesson develops essential algebra skills that support the study of functions, equations, and mathematical modelling. By learning how to evaluate functions efficiently and investigate compositions of functions, students can improve their understanding of function notation, relationships between variables, and multi-step mathematical processes. The procedures are demonstrated using the fx-83GTCW, however they can also be used with the fx-85GT CW, fx-991CW and all CW+ models. Mastering these techniques can improve calculation speed, increase accuracy, strengthen mathematical confidence, and support effective exam preparation by helping students solve function-based problems more efficiently.